All of the following cause neuroleptic malignant syndrome except? (AIIMS Nov 2011)
All the antipsychotic drugs actually depress dopaminergic receptors either by blocking it or decrease availability.
Amantidine is only drug which increase the availability of dopamine at nerve junction in brain.
In fact it is being given in parkinson disease
(refer--text book of pharmacology-- by Tripathi, chapter; antiparkinson drugs)